Konrad Wothe / Giant Green Sea Anemone (Anthopleura xanthogrammica) group, Goose Barnacles (Lepas anserifera) group and Ochre Sea Stars (Pisaster ochraceus) at low tide, Olympic National Park, Washington

LYNN M. STONE / Ochre seastar {Pisaster ochraceus} Oregon coast, USA

Jeff Rotman / Ochre Sea Stars (Pisaster ochraceus) feeding on barnacles, Vancouver Island, British Columbia, Canada North Pacific Ocean

Jeff Rotman / Ochre Sea stars (Pisaster ochraceus) feeding on barnacles, Vancouver Island, British Columbia, Canada. North Pacific Ocean

Mark Carwardine / Three Ochre sea stars (Pisaster ochraceus) South East Alaska, USA

Mark Carwardine / Ochre sea star (Pisaster ochraceus) on an algae covered rock, South East Alaska, USA

Matthias Breiter / Giant Green Sea Anemone (Anthopleura xanthogrammica) group and Ochre Sea Stars (Pisaster ochraceus) on rock wall on St. Lazaria Island, Alaska

Sue Daly / Purple / Ochre sea star (Pisaster ochraceus) Pacific coast, Canada, August

Matthew Maran / Ochre sea stars (Pisaster ochraeceus) on coastal rocks, Barkley Sound, Vancouver Island, Canada

Konrad Wothe / Giant Green Sea Anemone (Anthopleura xanthogrammica) group and Ochre Sea Stars (Pisaster ochraceus) at low tide, Olympic National Park, Washington

Konrad Wothe / Giant Green Sea Anemone (Anthopleura xanthogrammica) group, Goose Barnacles (Lepas anserifera) group and Ochre Sea Stars (Pisaster ochraceus) at low tide, Olympic National Park, Washington

Tim Fitzharris / Ochre Sea Star (Pisaster ochraceus) group attached to rock at low tide, Miwok Beach, Sonoma, California